Spotlight



SPOTLIGHT.

man FEB. 23. 1921.

a if 34 g'uuantot w rm 5 '6; if K; W////'am @m/erdm;

liatcnted Dec. 119, i922.

WILLIAM SCHIEBDING, OF SPOKANE, WASHINGTON.

SPOTLiC-HT.

Application filed February 23, 1921. Serial No. 447,195.

To (ill whom it may corms 1'2):

Be it known that I, lVrLLL-mr Sorrrnnniuo, a citizen of Germany (first and second papers being taken out to become a citizen or the United S ates), residing at Spokane, in Spokane County and State of VJashington, have invented certain new and useful Improvements in spotlights o't which the following is a specification.

lily present invention relates to an improvedspotlight for use on automobile and other vehicles. which light orlainp is provided with a single actuating element which may be manipulated by hand to secure both a vertical and horizontal adjustment of the lamp,.thus atlording a facile and convenient device of this character that is simple in construction and operation and comparatively inexpensive in cost.

The invention consists essentially in certain novel combinations. and arrangements of parts involving a speciallyi'ormed lamp yoke oriork upon which the lamp is supported by its trunnions and adapted to be tilted from its vertical position; together with means for oscillating or revolving the lamp and yoke in a horizontal plane, as will be hereinafter more fully pointed out and claimed.

In the accompanying. drawings I have illustrated one example of the physical embodiment 0i: my invention wherein the parts are combined and arranged accordingto the bestmode I have thus far devised. for the practical application of the principles of my invention, but it will he understood that colorable changes and alterations may be made in the exemplificatiom-without departing: fronr the spirit. of my invention and within-the scope of my claims appended hereto.

Figure l is a view with parts in section showing the lamp in normal vertical and horizontal position." with the actuating and operating mechanism in required condition to oscillate the lamp and its yoke in aborizontal plane.

l: re 2 is a plan. view of the curved rack bar (laid flat for convenience of illustration) which is encased, within the tubular yoke, by means of which the lamp is tilted or oscillated in a vertical plane.

Figure 3 is a perspective view of the tubular lamp yoke, detached.

In the preferred form of the invention as illustrated in the drawings a circular lamp of the spotlight type is indicated at l. and provided with horizontal, laterally extending radial trunnions 2 and 3 that are supported in the lamp yoke l which is of usual outward appearance, but constructed of special form for the purposes of my invention.

The yoke is a flat tubular body with closed ends, and oi semi-circular shape to encz the curved or circular rack bar 5, which is of plate metal and designed to move circumieu entially of the lamp within the tubular yoke. On the trunnions 2 and 3 0; the lamp are provided. pinions 6 and 7 located within the yoke and occupyingspace in the end. slots 8 of the rack plate. which slots are fashioned with rack teeth 9 and 10 in the oppositely disposed walls or the slots for co-action wit the pinions 6 and 7 to tilt the lamp cally. Access may be had to the interior of the tubular yoke through the pivoted closures or doors 11 when it is necessary to oil or otherwise attend to the pinions.

At the underside of the yoke. and centrally disposed thereof is a swivel head 12that is provided with diverging arms 1? attached to the yoke by screws 38, and the lamp, yoke and head are adapted-to oscillate {or horizontally turning-or adjusting the lamp. In Figure 1 it will be seen that the head is fashioned with an exterior annular groove la and seated in the collar 15 which terms the swivel base. A friction ring and antirattling device 16 is disposed in the annular groove and the set screws 17 for retaining the relative position of the head with respect to the base are passed through the collar or base and bear against the ring in the groove to insure sutiicient friction between the ring and headto hold thehead. in adjusted position. and prevent rattliu of parts. 7

The swivel base is fixed in a stationary, spherical housing 18 that is tiashioucd with an annular flange 19 at i supper open. end, and by means of the set bolt 20 the base is retained'in this flanged housing as seen in Figure l. 7 I

The lmusing preterably formed lute with a horizontally extending; tubular bra ill. which is flanged at 22 to co-act with an ati'a .hiugipiate 25 for rigidly attaching M supporting the device from a portion oi the automobile body as indicated at 24-, screws '25 being utilized to secure the flange and plate to Ll'lQ body as shown.

The lamp is both horizontally oscillated and vertically tilted through the instrumentality of the actuating shaft 26 that may be moved lmigitiulinally and also revolved in its bearings 27 in the attaching plate and supporting bracket formed by the housing and tubular. extension 2i thereof. At one end the shaft is provided with a hand wheel 23, and at its opposite end carries a driving, bevel gear 29, the latter located in. the spherical housing and continuously in mesh with a complementary driven pinion 30 on the vertically disposed counter-shaft 31 sup ported in bearings in the swivel base. Within the recessed swivel head 12 the countershaft is provided with a' beveled clutch disk 32 which co-acts with an an nular clutch member 33 on the recessed head and it will thus be apparent that the disk, co-acting with the clutch member 33, is designed to oscillate the yoke and its lamp in a horizontal plane for adjusting the lamp to throw the rays of its light within the range of a complete circle, by turning the hand wheel 28, and through the connections described.

The clutch disk 32 and clutch member 33 form a clutch that is normally held closed and in engagement by the clutch spring 39 located in the recessed swivel base 15 and interposed between the base and the driven gear 30, thus tending to hold down the counter shaft with the clutch member engaged.

In order that the spotlight may be tilted, the clutch is disengaged, as will be explained, and a pinion 3d fixed at the upper end of the countershaft 31 co-acts with the teeth 35 at one side of the walls of a slot 36 located at the longitudinal center of the rack plate 5, as best seen in Figure 2. This slot has reduced extensions 37 to accommodate the attaching screws 38 of the swivel head and yoke, and the screws also perform the function of guides for maintaining the circumferentially movable rack plate in proper alined position.

Within the spherical housing, and between the bevel gears 29 and 30 a clutch lever or fork 40 is interposed, having a pivot in the housing at 4L1, with its two ends bearing against the respective gears. Now it will be apparent that when the hand wheel and shaft 26 are pulled slightly to the right in Figure 1 the action of the gear 29 against the lower arm of the lever 40 will be to cause the upper arm of this lever to lift the gear 30, shaft 31 and clutch disk 32, against the tension of the clutch spring 39, suiliciently to disengage the rack wheel fromthe swivel head. The gears 29 and 30 and the pinion 3-13: and teeth 35 of the rack plate, however, remain in contact in order that 1 iso i is teeth 35 swings or moves the rack plate circumferentially of the lamp, arid thus through the sets of rack teeth 9 and 10 and pinions 6 and 7 on the trunnions 2 and 3,

the trunnions are oscillated carrying with them the lamp to tilt it in desired direction. The hand wheel may be turned clockwise or anti-clockwise to tilt the lamp up or down as desired, and the rack plate will be moved, corresponding with the movement of the hand wheel, it being understood of course that the lamp may be tilted independent of its horizontal movement, or a combined tilting and horizontal movement may be imparted to the lamp as desired.

Having thus fully described my invention, what I claim as new and desire to secure by Letters Patent is- 1. The combination with a lamp having trunnions and pinions thereon, of a tubular yoke and a rack plate therein movable circumferentially of the lamp, complementary racks on said plate for said pinions, and means for moving said plate.

2. The combination with a lamp. having trunnions and pinions thereon, of a tubular supporting yoke, a curved rack plate within said yoke co-acting with said pinions, said plate having an intermediate rack, a shaft and a pinion thereon engaging the intermediate rack, and means for oscillating said shaft.

3. The combination with a lamp having trunnions and pinions thereon, of a tubular supporting yoke therefor having a swivel head, a swivel base for said head, a shaft having a clutch disk and a complementary clutch member on said head, a curved rack plate in the yoke meshing with said pinions, v an intermediate rack on said plate, a pinion on said shaft meshing with said intermediate rack, and means for oscillating said shaft.

4. The combination with a yoke having a. swivel head, and a vertically tiltable lamp, of a swivel base recessed to receive said head, an annular clutch element on said head, a shaft in the base and head having a clutch element to engage the first clutch element, means for retaining the swivel head. in the base, means for actuating said clutch to rotate the head about a vertical axis, and means actuated by said shaft to tilt the lamp when the clutch elements are disengaged.

In testimony whereof I afiix my signature.

WILLIAM SCHIERDING. 

